// Copyright (c) 2011 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//    * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//    * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// The contents of this file must follow a specific format in order to
// support the CEF translator tool. See the translator.README.txt file in the
// tools directory for more information.
//

#ifndef CEF_INCLUDE_CEF_REQUEST_HANDLER_H_
#define CEF_INCLUDE_CEF_REQUEST_HANDLER_H_
#pragma once

#include <vector>

#include "include/cef_auth_callback.h"
#include "include/cef_base.h"
#include "include/cef_browser.h"
#include "include/cef_callback.h"
#include "include/cef_frame.h"
#include "include/cef_request.h"
#include "include/cef_resource_request_handler.h"
#include "include/cef_ssl_info.h"
#include "include/cef_x509_certificate.h"

///
// Implement this interface to handle events related to browser requests. The
// methods of this class will be called on the thread indicated.
///
/*--cef(source=client)--*/
class CefRequestHandler : public virtual CefBaseRefCounted {
 public:
  typedef cef_termination_status_t TerminationStatus;
  typedef cef_window_open_disposition_t WindowOpenDisposition;
  typedef std::vector<CefRefPtr<CefX509Certificate>> X509CertificateList;

  ///
  // Called on the UI thread before browser navigation. Return true to cancel
  // the navigation or false to allow the navigation to proceed. The |request|
  // object cannot be modified in this callback.
  // CefLoadHandler::OnLoadingStateChange will be called twice in all cases.
  // If the navigation is allowed CefLoadHandler::OnLoadStart and
  // CefLoadHandler::OnLoadEnd will be called. If the navigation is canceled
  // CefLoadHandler::OnLoadError will be called with an |errorCode| value of
  // ERR_ABORTED. The |user_gesture| value will be true if the browser
  // navigated via explicit user gesture (e.g. clicking a link) or false if it
  // navigated automatically (e.g. via the DomContentLoaded event).
  ///
  /*--cef()--*/
  virtual bool OnBeforeBrowse(CefRefPtr<CefBrowser> browser,
                              CefRefPtr<CefFrame> frame,
                              CefRefPtr<CefRequest> request,
                              bool user_gesture,
                              bool is_redirect) {
    return false;
  }

  ///
  // Called on the UI thread before OnBeforeBrowse in certain limited cases
  // where navigating a new or different browser might be desirable. This
  // includes user-initiated navigation that might open in a special way (e.g.
  // links clicked via middle-click or ctrl + left-click) and certain types of
  // cross-origin navigation initiated from the renderer process (e.g.
  // navigating the top-level frame to/from a file URL). The |browser| and
  // |frame| values represent the source of the navigation. The
  // |target_disposition| value indicates where the user intended to navigate
  // the browser based on standard Chromium behaviors (e.g. current tab,
  // new tab, etc). The |user_gesture| value will be true if the browser
  // navigated via explicit user gesture (e.g. clicking a link) or false if it
  // navigated automatically (e.g. via the DomContentLoaded event). Return true
  // to cancel the navigation or false to allow the navigation to proceed in the
  // source browser's top-level frame.
  ///
  /*--cef()--*/
  virtual bool OnOpenURLFromTab(CefRefPtr<CefBrowser> browser,
                                CefRefPtr<CefFrame> frame,
                                const CefString& target_url,
                                WindowOpenDisposition target_disposition,
                                bool user_gesture) {
    return false;
  }

  ///
  // Called on the browser process IO thread before a resource request is
  // initiated. The |browser| and |frame| values represent the source of the
  // request. |request| represents the request contents and cannot be modified
  // in this callback. |is_navigation| will be true if the resource request is a
  // navigation. |is_download| will be true if the resource request is a
  // download. |request_initiator| is the origin (scheme + domain) of the page
  // that initiated the request. Set |disable_default_handling| to true to
  // disable default handling of the request, in which case it will need to be
  // handled via CefResourceRequestHandler::GetResourceHandler or it will be
  // canceled. To allow the resource load to proceed with default handling
  // return NULL. To specify a handler for the resource return a
  // CefResourceRequestHandler object. If this callback returns NULL the same
  // method will be called on the associated CefRequestContextHandler, if any.
  ///
  /*--cef(optional_param=request_initiator)--*/
  virtual CefRefPtr<CefResourceRequestHandler> GetResourceRequestHandler(
      CefRefPtr<CefBrowser> browser,
      CefRefPtr<CefFrame> frame,
      CefRefPtr<CefRequest> request,
      bool is_navigation,
      bool is_download,
      const CefString& request_initiator,
      bool& disable_default_handling) {
    return nullptr;
  }

  ///
  // Called on the IO thread when the browser needs credentials from the user.
  // |origin_url| is the origin making this authentication request. |isProxy|
  // indicates whether the host is a proxy server. |host| contains the hostname
  // and |port| contains the port number. |realm| is the realm of the challenge
  // and may be empty. |scheme| is the authentication scheme used, such as
  // "basic" or "digest", and will be empty if the source of the request is an
  // FTP server. Return true to continue the request and call
  // CefAuthCallback::Continue() either in this method or at a later time when
  // the authentication information is available. Return false to cancel the
  // request immediately.
  ///
  /*--cef(optional_param=realm,optional_param=scheme)--*/
  virtual bool GetAuthCredentials(CefRefPtr<CefBrowser> browser,
                                  const CefString& origin_url,
                                  bool isProxy,
                                  const CefString& host,
                                  int port,
                                  const CefString& realm,
                                  const CefString& scheme,
                                  CefRefPtr<CefAuthCallback> callback) {
    return false;
  }

  ///
  // Called on the IO thread when JavaScript requests a specific storage quota
  // size via the webkitStorageInfo.requestQuota function. |origin_url| is the
  // origin of the page making the request. |new_size| is the requested quota
  // size in bytes. Return true to continue the request and call CefCallback
  // methods either in this method or at a later time to grant or deny the
  // request. Return false to cancel the request immediately.
  ///
  /*--cef()--*/
  virtual bool OnQuotaRequest(CefRefPtr<CefBrowser> browser,
                              const CefString& origin_url,
                              int64 new_size,
                              CefRefPtr<CefCallback> callback) {
    return false;
  }

  ///
  // Called on the UI thread to handle requests for URLs with an invalid
  // SSL certificate. Return true and call CefCallback methods either in this
  // method or at a later time to continue or cancel the request. Return false
  // to cancel the request immediately. If CefSettings.ignore_certificate_errors
  // is set all invalid certificates will be accepted without calling this
  // method.
  ///
  /*--cef()--*/
  virtual bool OnCertificateError(CefRefPtr<CefBrowser> browser,
                                  cef_errorcode_t cert_error,
                                  const CefString& request_url,
                                  CefRefPtr<CefSSLInfo> ssl_info,
                                  CefRefPtr<CefCallback> callback) {
    return false;
  }

  ///
  // Called on the UI thread when a client certificate is being requested for
  // authentication. Return false to use the default behavior and automatically
  // select the first certificate available. Return true and call
  // CefSelectClientCertificateCallback::Select either in this method or at a
  // later time to select a certificate. Do not call Select or call it with NULL
  // to continue without using any certificate. |isProxy| indicates whether the
  // host is an HTTPS proxy or the origin server. |host| and |port| contains the
  // hostname and port of the SSL server. |certificates| is the list of
  // certificates to choose from; this list has already been pruned by Chromium
  // so that it only contains certificates from issuers that the server trusts.
  ///
  /*--cef()--*/
  virtual bool OnSelectClientCertificate(
      CefRefPtr<CefBrowser> browser,
      bool isProxy,
      const CefString& host,
      int port,
      const std::vector<CefString>& key_types,
      const std::vector<CefString>& principals,
      const X509CertificateList& certificates,
      CefRefPtr<CefSelectClientCertificateCallback> callback) {
    return false;
  }

  ///
  // Called on the browser process UI thread when a plugin has crashed.
  // |plugin_path| is the path of the plugin that crashed.
  ///
  /*--cef()--*/
  virtual void OnPluginCrashed(CefRefPtr<CefBrowser> browser,
                               const CefString& plugin_path) {}

  ///
  // Called on the browser process UI thread when the render view associated
  // with |browser| is ready to receive/handle IPC messages in the render
  // process.
  ///
  /*--cef()--*/
  virtual void OnRenderViewReady(CefRefPtr<CefBrowser> browser) {}

  ///
  // Called on the browser process UI thread when the render process
  // terminates unexpectedly. |status| indicates how the process
  // terminated.
  ///
  /*--cef()--*/
  virtual void OnRenderProcessTerminated(CefRefPtr<CefBrowser> browser,
                                         TerminationStatus status) {}

  ///
  // Called on the browser process UI thread when the window.document object of
  // the main frame has been created.
  ///
  /*--cef()--*/
  virtual void OnDocumentAvailableInMainFrame(CefRefPtr<CefBrowser> browser) {}
};

#endif  // CEF_INCLUDE_CEF_REQUEST_HANDLER_H_
